Abstract

An SU(7) model is presented toward a flavor unification for known particles. The $t$ quark is not a partner of the $b$ quark. There are three types of neutrinos and several -so far unobserved-light detectable particles (masses 300 GeV): a doubly charged lepton ${T}^{\ensuremath{-}\ensuremath{-}}$, a $Q=\ensuremath{-}\frac{4}{3}$ quark $x$, and a $Q=\frac{5}{3}$ quark $y$. An intermediate mass scale is a necessity and there is no problem of magnetic monopoles.

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